[amsat-bb] Falconsat3 ASTARS Network Concept
jmtrewitt at gmail.com
Fri Oct 13 04:00:47 UTC 2017
That honestly sounds like a really good advertisement for one of the Phase
4 satellite concepts if I've heard of one. Although I do kind of hope I can
get time to listen to the falcon sat before the symposium.
On Thu, Oct 12, 2017 at 10:24 PM Stefan Wagener <wageners at gmail.com> wrote:
> Sorry Bob,
> With all due respect, but I could not disagree more with your
> statement: "Falconsat3
> brings back a great satellite capability for emergency response traffic
> into and out of remote disaster areas. Its file store and forward BBS using
> the PACSAT protocol is ideal for getting multiline messages, and pictures
> and data out of an area."
> Here is why:
> 1. Its foot print and availability is severely limited by its inclination
> of 35 degrees. Most of the northern hemisphere has a few minutes and
> low horizon activity during a very short window.
> 2. Any satellite that is not available 24/7 (e.g. geostationary) is not
> useful for emergency operations. Having it around for a few minutes a day
> does not cut it. There is a reason why folks use HF and VHF radios (and not
> amateur radio satellites)
> 3. The equipment, software and user training is not there. Just look at the
> "fun" people having getting the TX side going.
> 4. You can count on one hand the folks that are currently having RX and TX
> ability to get a few packets through not even thinking about images etc.
> 5. Emergency response requires KISS equipment and training on the amateur
> radio side.
> On the other hand, it is a fun satellite to play with and like most APRS
> satellites a niche to explore and enjoyable from a hobby perspective.
> Again, these comments are within the spirit of our common interests
> and acknowledging all the great work you are doing and have done.
> 73, Stefan VE4NSA
> On Thu, Oct 12, 2017 at 5:23 PM, Robert Bruninga <bruninga at usna.edu>
> > Falconsat3 brings back a great satellite capability for emergency
> > traffic into and out of remote disaster areas.
> > Its file store and forward BBS using the PACSAT protocol is ideal for
> > getting multiline messages, and pictures and data out of an area. Amateur
> > radio Sateliltes sort of abandoned this concept with the rise of the
> > internet. And then the short, real-time contact capability of APRS
> > matched the shorter attention span of the evolving users.
> > But now we have both in Falconsat3. But we also now have the Internet
> > can integrate a worldwide collection of satstations capturing all the
> > downlink PACSAT BBS packets and building a WEB portal on the ground that
> > always mirrors the traffic on the bird. Imagine that a remote operator
> > post a photo or file that can be read on a Falconsat WEB portal by FEMA
> > emergency operators back here anytime, anywhere.
> > The concept is suggested on this page: http://aprs.org/PFS3.html
> > All we need is someone to write the internet server that collects the BBS
> > packets from all the ground stations like the APRS-IS already does for
> > APRS, but this new PACSAT-IS would be just for PACSAT BBS traffic.
> > Then someone to collect the data and write the WEB Portal.
> > Then people to put up satgates (hopefully using omni antennas) and with
> > enough stations, all packets could be collected.
> > Anyway, I created the above web page to kind of serve as a target for
> > exciting new Amateur Radio capability.
> > So even stations that are using OMNI antennas now and only decoding a few
> > packets per pass, we need to understand how well this works for high
> > elevation passes. Even this sparse data is good data.
> > Remember, with a standard TNC all you are seeing are the few UI packets
> > the downlink. I think if you set KISS mode, you will be flooded with all
> > the streaming BBS data too. This continuous stream at 9600 can make it
> > easy to see the effect of an antenna in very short time.
> > Bob, WB4APR
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> > expressed
> > are solely those of the author, and do not reflect the official views of
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